public void buildMessage()
{
STUNMessageBuilder builder = new STUNMessageBuilder(null,
STUNClass.Error, STUNMethod.Binding,
new Transaction(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1));
builder.WriteAttribute(0b111, new ByteBuffer(new byte[] { 255 }));
byte[] message = builder.Build().ToArray();
byte[] transaction = new byte[12];
Array.Copy(message, 8, transaction, 0, 12);
ByteBuffer transactionInt = new ByteBuffer(transaction);
uint magicCookie = new ByteBuffer(message).GetUIntAt(4);
// check length
Assert.AreEqual(0, (message.Length - 20) % 4);
// check length without header
Assert.AreEqual(message.Length - 20, new ByteBuffer(message).GetUShortAt(2));
// check group
Assert.AreEqual(STUNClass.Error, STUNHeader.GetClass(new ByteBuffer(message).GetUShortAt(0)));
// check method
Assert.AreEqual(STUNMethod.Binding, STUNHeader.GetMethod(new ByteBuffer(message).GetUShortAt(0)));
// check magic cookie
Assert.AreEqual(STUNHeader.MAGIC_COOKIE, magicCookie);
// check transaction
Assert.AreEqual(1, transactionInt[0]);
for (int i = 1; i < transactionInt.Length; i++)
{
Assert.AreEqual(0, transactionInt[i]);
}
// check first byte of tlv
Assert.AreEqual(0, message[20]);
// check second byte of tlv
Assert.AreEqual(0b111, message[20 + 1]);
// check first byte of tlv length
Assert.AreEqual(0, message[20 + 2]);
// check second byte of tlv length
Assert.AreEqual(1, message[20 + 2 + 1]);
// check first byte of tlv value
Assert.AreEqual(255, message[20 + 2 + 2]);
// check second byte of tlv value
Assert.AreEqual(0, message[20 + 2 + 2 + 1]);
// check third byte of tlv value
Assert.AreEqual(0, message[20 + 2 + 2 + 2]);
// check fourth byte of tlv value
Assert.AreEqual(0, message[20 + 2 + 2 + 3]);
}
public void header()
{
STUNMessageBuilder builder = new STUNMessageBuilder(null,
STUNClass.Error, STUNMethod.Binding,
new Transaction(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10));
builder.WriteAttribute(0xBABA, new ByteBuffer(new byte[20]));
byte[] header = builder.GetHeader().ToArray();
byte[] transaction = new byte[12];
Array.Copy(header, 8, transaction, 0, 12);
ByteBuffer transactionInt = new ByteBuffer(transaction);
uint magicCookie = new ByteBuffer(header).GetUIntAt(4);
Assert.IsNotNull(header);
Assert.AreEqual(20, header.Length);
// check group
Assert.AreEqual(STUNClass.Error, STUNHeader.GetClass(new ByteBuffer(header).GetUShortAt(0)));
// check method
Assert.AreEqual(STUNMethod.Binding, STUNHeader.GetMethod(new ByteBuffer(header).GetUShortAt(0)));
// check tlv length
Assert.AreEqual(20 + 4, new ByteBuffer(header).GetUShortAt(2));
// check magic cookie
Assert.AreEqual(STUNHeader.MAGIC_COOKIE, magicCookie);
// check transaction
Assert.AreEqual(10, transactionInt[0]);
for (int i = 1; i < transactionInt.Length; i++)
{
Assert.AreEqual(0, transactionInt[i]);
}
}
